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v-model.number: clarify unexpected behavior #2975

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Sep 16, 2024
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v-model.number: clarify unexpected behavior #2975

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v-model.number: clarify unexpected behavior
simon04 Aug 20, 2024
88e7a39
v-model.number: clarify unexpected behavior (not a warning!)
simon04 Sep 4, 2024
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4 changes: 3 additions & 1 deletion src/guide/essentials/forms.md
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Expand Up @@ -442,7 +442,9 @@ If you want user input to be automatically typecast as a number, you can add the
<input v-model.number="age" />
```

If the value cannot be parsed with `parseFloat()`, then the original value is used instead.
:::warning
If the value cannot be parsed with `parseFloat()`, then the original (string) value is used instead. In particular, if the input is empty (for instance after the user clearing the input field), an empty string is returned. This behavior differs from the [DOM property `valueAsNumber`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement#valueasnumber).
:::

The `number` modifier is applied automatically if the input has `type="number"`.

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